什么是半截止夹具
半截式灯具是一种常用于室外的照明灯具，尤其是安装在墙壁或电线杆上的壁灯。不同于 全断电装置 半截式灯具的设计允许一些光线从水平面上方射出。这就意味着，虽然大部分光线是向下照射的，但也有一部分光线是向上照射的，这可能会造成以下后果 光污染.
半截式灯具通常用于需要适量向下照明，同时仍允许一些向上照明的区域。半截式灯具既能提供足够的能见度照明，又能提供一些向上的照明，在两者之间取得了平衡。 美学或环境照明.与全截止式灯具相比，它们在最大限度地减少光污染或提供高水平的安全性方面没有那么有效。
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